You really don't need 60W rms going to each speaker, but you can if you want. Just to name a few good brands to look at.....JBL, Rockford Fosgate, Profile, PowerAcoustik, Alpine, Audiobahn (not a bad amp, but usually pricey, VISONIK. There are plenty of other good brands out there so just look around and find one that meets your needs and falls within your price range. If you have a question about a brand you have not heard of, just ask us and we will be able to tell you whether or not it is decent. Oh, one more thing...you probably would want to go with a 4ch amp (you could however use a 2ch amp to power all 4 interior speakers, but you would lose fading capabilities and probably want a higher power output)